/* ═══════════════════════════════════════════════════════
   Tolu Agent Gallery — World-Class Interactive Portfolio
   ═══════════════════════════════════════════════════════ */

/* === DESIGN TOKENS === */
:root {
  --bg: #05060a;
  --panel: rgba(13, 18, 32, 0.55);
  --panel-strong: rgba(17, 24, 44, 0.82);
  --text: #f4f7ff;
  --muted: #8b96ad;
  --cyan: #67e8f9;
  --violet: #8b5cf6;
  --line: rgba(145, 158, 190, 0.15);
  --line-hover: rgba(145, 158, 190, 0.3);
  --radius: 1.2rem;
  --radius-sm: 0.7rem;
  --font-display: "Space Grotesk", sans-serif;
  --font-body: Inter, system-ui, -apple-system, sans-serif;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* === RESET === */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
html, body { min-height: 100%; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  line-height: 1.6;
}

/* === NOISE TEXTURE OVERLAY === */
.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* === GRADIENT MESH BACKGROUND === */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 50% at 10% 0%, rgba(28, 44, 84, 0.7), transparent),
    radial-gradient(ellipse 60% 40% at 85% -5%, rgba(77, 43, 138, 0.5), transparent),
    radial-gradient(ellipse 50% 60% at 50% 50%, rgba(10, 15, 30, 0.8), transparent),
    radial-gradient(ellipse 40% 30% at 70% 80%, rgba(103, 232, 249, 0.06), transparent),
    var(--bg);
}

/* === SCROLL PROGRESS BAR === */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  z-index: 10000;
  transition: none;
  will-change: width;
}

/* === CANVAS === */
#nebula {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
}

/* ═══════════════════════════════════════════════════════
   GLASS CARD SYSTEM
   ═══════════════════════════════════════════════════════ */
.glass-card {
  background: var(--panel);
  border: 1px solid var(--line);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}
.glass-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, transparent 50%);
  pointer-events: none;
}

/* ═══════════════════════════════════════════════════════
   HEADER / NAVIGATION
   ═══════════════════════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0.9rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.4s ease, backdrop-filter 0.4s ease, box-shadow 0.4s ease;
}
.site-header.scrolled {
  background: rgba(5, 6, 10, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--line);
}
.brand {
  color: var(--text);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  transition: transform 0.3s var(--ease-spring);
}
.brand:hover { transform: scale(1.03); }
.brand-dot { color: var(--cyan); }

nav { display: flex; gap: 0.3rem; }
nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.88rem;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  transition: color 0.25s ease, background 0.25s ease;
}
nav a:hover {
  color: var(--text);
  background: rgba(255,255,255,0.05);
}

/* ═══════════════════════════════════════════════════════
   MAIN LAYOUT
   ═══════════════════════════════════════════════════════ */
main {
  width: min(1200px, calc(100% - 3rem));
  margin: 0 auto;
}
.section { padding: 5rem 0; }

/* === EYEBROW === */
.eyebrow {
  color: var(--cyan);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
  margin: 0 0 0.8rem;
}

/* === TYPOGRAPHY === */
h1, h2, h3, .section-title {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
}
.section-title { font-size: clamp(1.5rem, 3.5vw, 2.6rem); }
.lead {
  color: var(--muted);
  max-width: 55ch;
  font-size: 1.05rem;
  line-height: 1.8;
  margin: 1.2rem 0 0;
}
.lead-small {
  color: var(--muted);
  max-width: 60ch;
  line-height: 1.7;
  font-size: 0.95rem;
}

/* ═══════════════════════════════════════════════════════
   HERO SECTION
   ═══════════════════════════════════════════════════════ */
.hero {
  padding-top: 7rem;
  padding-bottom: 4rem;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.85fr);
  gap: 2rem;
  align-items: center;
  min-height: 90vh;
  position: relative;
}

/* === MORPHING GRADIENT ORB === */
.hero-orb {
  position: absolute;
  right: -5%;
  top: 10%;
  width: 450px;
  height: 450px;
  pointer-events: none;
  z-index: 0;
  will-change: transform;
}
.orb-core {
  position: absolute;
  inset: 15%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, rgba(103, 232, 249, 0.4), transparent 60%),
    radial-gradient(circle at 70% 70%, rgba(139, 92, 246, 0.35), transparent 60%),
    radial-gradient(circle at 50% 50%, rgba(103, 232, 249, 0.15), transparent);
  filter: blur(30px);
  animation: orbPulse 6s ease-in-out infinite alternate, orbFloat 8s ease-in-out infinite;
  will-change: transform, opacity;
}
.orb-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid;
  will-change: transform;
}
.orb-ring-1 {
  inset: 5%;
  border-color: rgba(103, 232, 249, 0.12);
  animation: orbSpin 20s linear infinite;
}
.orb-ring-2 {
  inset: 0;
  border-color: rgba(139, 92, 246, 0.08);
  animation: orbSpin 30s linear infinite reverse;
}
.orb-ring-3 {
  inset: -5%;
  border-color: rgba(103, 232, 249, 0.05);
  animation: orbSpin 40s linear infinite;
}

@keyframes orbPulse {
  0% { transform: scale(1); opacity: 0.7; }
  100% { transform: scale(1.15); opacity: 1; }
}
@keyframes orbFloat {
  0%, 100% { transform: translateY(0px) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}
@keyframes orbSpin {
  to { transform: rotate(360deg); }
}

/* === HERO CONTENT === */
.hero-content {
  position: relative;
  z-index: 1;
}
.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.8rem);
  line-height: 1.05;
  max-width: 14ch;
  margin-bottom: 0.5rem;
}
.hero-title .line {
  display: inline;
  position: relative;
}
.hero-title .highlight {
  background: linear-gradient(135deg, var(--cyan), #c7c3ff, var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Typewriter cursor */
.cursor {
  animation: blink 1s step-end infinite;
  color: var(--cyan);
  font-weight: 300;
}
@keyframes blink {
  50% { opacity: 0; }
}

/* === HERO PANEL === */
.hero-panel {
  padding: 1.5rem;
  position: relative;
  z-index: 1;
}
.hero-panel h2 {
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
  font-family: var(--font-display);
}
.panel-kicker {
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.75rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
}
.signal-list {
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
}
.signal-list li {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--muted);
  font-size: 0.92rem;
}
.signal-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  flex-shrink: 0;
  box-shadow: 0 0 8px rgba(103, 232, 249, 0.4);
}

/* ═══════════════════════════════════════════════════════
   BUTTONS (Magnetic)
   ═══════════════════════════════════════════════════════ */
.cta-row {
  margin-top: 1.8rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  padding: 0.75rem 1.3rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.9rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.3s var(--ease-spring), box-shadow 0.3s ease, border-color 0.3s ease;
  will-change: transform;
  font-family: var(--font-body);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0px) scale(0.98); }
.btn-primary {
  color: #041019;
  background: linear-gradient(135deg, var(--cyan), #d7d2ff);
  box-shadow: 0 8px 24px rgba(103, 232, 249, 0.2), inset 0 1px 0 rgba(255,255,255,0.2);
}
.btn-primary:hover {
  box-shadow: 0 12px 32px rgba(103, 232, 249, 0.3), inset 0 1px 0 rgba(255,255,255,0.3);
}
.btn-ghost {
  color: var(--text);
  border-color: var(--line);
  background: rgba(8, 12, 22, 0.35);
}
.btn-ghost:hover {
  border-color: var(--line-hover);
  background: rgba(8, 12, 22, 0.5);
}
.btn svg { flex-shrink: 0; }

/* ═══════════════════════════════════════════════════════
   GALLERY SECTION
   ═══════════════════════════════════════════════════════ */
.section-head {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: end;
  margin-bottom: 2.5rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

/* === EXHIBIT CARD === */
.exhibit-card {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  min-height: 240px;
  cursor: default;
  transform-style: preserve-3d;
  perspective: 800px;
  transition: transform 0.4s var(--ease-out-expo), box-shadow 0.4s ease;
  will-change: transform;
}
.exhibit-card:hover {
  box-shadow: 0 20px 60px rgba(0,0,0,0.3), 0 0 0 1px var(--line-hover);
}

/* Featured cards span 2 columns */
.featured-card { grid-column: span 1; }

/* Glow effect behind card */
.exhibit-glow {
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: radial-gradient(circle at 50% 0%, rgba(103, 232, 249, 0.08), transparent 60%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}
.exhibit-card:hover .exhibit-glow { opacity: 1; }

.exhibit-meta {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.pill {
  border: 1px solid var(--line);
  color: #cfe2ff;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.7rem;
  background: rgba(11, 17, 30, 0.5);
  letter-spacing: 0.02em;
}
.pill-live {
  border-color: rgba(103, 232, 249, 0.3);
  color: var(--cyan);
}

.exhibit-card h3 {
  font-size: 1.2rem;
  font-family: var(--font-display);
}
.exhibit-card p {
  color: var(--muted);
  line-height: 1.7;
  font-size: 0.92rem;
  flex: 1;
}

.demo-toggle {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid rgba(103, 232, 249, 0.25);
  color: var(--cyan);
  background: rgba(103, 232, 249, 0.06);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all 0.3s ease;
}
.demo-toggle:hover {
  background: rgba(103, 232, 249, 0.12);
  border-color: rgba(103, 232, 249, 0.4);
  transform: translateX(3px);
}
.demo-toggle svg {
  transition: transform 0.3s var(--ease-spring);
}
.demo-toggle:hover svg {
  transform: translateX(3px);
}

/* ═══════════════════════════════════════════════════════
   LIVE LAB SECTION
   ═══════════════════════════════════════════════════════ */
.lab-shell {
  padding: 2rem;
}
.lab-top {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: end;
  margin-bottom: 2rem;
}
.lab-chip {
  border: 1px solid var(--line);
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  font-size: 0.78rem;
  color: var(--muted);
  background: rgba(11, 17, 30, 0.5);
}
.lab-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}
.lab-visual {
  position: relative;
  height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
  will-change: transform;
}
.orb-a {
  width: 180px; height: 180px;
  background: radial-gradient(circle, rgba(103, 232, 249, 0.4), transparent 70%);
  animation: labOrbA 6s ease-in-out infinite alternate;
}
.orb-b {
  width: 140px; height: 140px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.35), transparent 70%);
  animation: labOrbB 8s ease-in-out infinite alternate;
}
.orb-c {
  width: 100px; height: 100px;
  background: radial-gradient(circle, rgba(103, 232, 249, 0.2), transparent 70%);
  animation: labOrbC 5s ease-in-out infinite alternate;
}
@keyframes labOrbA {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, -20px) scale(1.2); }
}
@keyframes labOrbB {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-25px, 15px) scale(1.15); }
}
@keyframes labOrbC {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(15px, 25px) scale(0.9); }
}

.lab-panel h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin-bottom: 1rem;
  color: var(--text);
}
.demo-output {
  background: rgba(5, 6, 10, 0.6);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 1rem;
  font-family: "SF Mono", "Fira Code", monospace;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--cyan);
  white-space: pre-wrap;
  overflow-x: auto;
  max-height: 200px;
}

/* ═══════════════════════════════════════════════════════
   STACK SECTION
   ═══════════════════════════════════════════════════════ */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2rem;
}
.stack-card {
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  transition: transform 0.4s var(--ease-out-expo), box-shadow 0.4s ease;
  will-change: transform;
}
.stack-card:hover {
  box-shadow: 0 16px 48px rgba(0,0,0,0.25);
}
.stack-icon {
  margin-bottom: 0.3rem;
}
.stack-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
}
.stack-card p {
  color: var(--muted);
  line-height: 1.7;
  font-size: 0.92rem;
}

/* ═══════════════════════════════════════════════════════
   CONTACT SECTION
   ═══════════════════════════════════════════════════════ */
.contact-card {
  padding: 2.5rem;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}
.contact-card p {
  color: var(--muted);
  line-height: 1.7;
  margin: 1rem 0;
}
.contact-card .cta-row {
  justify-content: center;
}

/* ═══════════════════════════════════════════════════════
   SCROLL REVEAL ANIMATIONS
   ═══════════════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered delays via data-delay */
.reveal[data-delay="100"] { transition-delay: 100ms; }
.reveal[data-delay="200"] { transition-delay: 200ms; }
.reveal[data-delay="300"] { transition-delay: 300ms; }
.reveal[data-delay="400"] { transition-delay: 400ms; }

/* ═══════════════════════════════════════════════════════
   RESPONSIVE DESIGN
   ═══════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 6rem;
  }
  .hero-orb { display: none; }
  .hero-panel { order: -1; }
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .site-header { padding: 0.7rem 1rem; }
  nav { gap: 0.15rem; }
  nav a { padding: 0.3rem 0.5rem; font-size: 0.8rem; }
  .section { padding: 3.5rem 0; }
  .hero { padding-top: 5rem; }
  .hero-title { font-size: clamp(2rem, 8vw, 3rem); }
  .gallery-grid { grid-template-columns: 1fr; }
  .lab-body { grid-template-columns: 1fr; }
  .lab-visual { height: 180px; }
  .stack-grid { grid-template-columns: 1fr; }
  .section-head { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  main { width: calc(100% - 1.5rem); }
  .cta-row { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
}

/* ═══════════════════════════════════════════════════════
   FOCUS & ACCESSIBILITY
   ═══════════════════════════════════════════════════════ */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
a:focus:not(:focus-visible),
button:focus:not(:focus-visible) {
  outline: none;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
  .hero-orb { display: none; }
}

/* Selection */
::selection {
  background: rgba(103, 232, 249, 0.25);
  color: var(--text);
}